I have an 08 4x4, regardless of what you get make sure to include the towing option. This comes with better coolers for the transmission etc.
I have the 5.4L the new Eco boost is supposed to be really good on mileage and power. You will have to do your own homework to determine whats best for your application.
I am assuming your buying new so my experience would not be typical of the newer trucks.
DSM8 - A different kind of mean
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